Lubricating system for logging blocks



Dec. 19, 1922. 1,439,349. 0. A. WIRKKALA.

LUBRICATING SYSTEM FOR LOGGING-BLOCKS. FILED AUG-3, I92l.

Fig.1 Fig 2 04am CZ. Z/vz/QM NVENTOR.

BY ATTORNEY.

I Patented Dec. 1%, 1922.

T all whom it may 009mm;

all inclined as shown in Fig. 1.

osireaSTA E oscaa a. "WIRKKALA, or ROME TOWNSHIP, ma a COi'INTY, WASHINGTON;

IiUBnroatriNe sYs'rEM ronLoeGiNe Brooks.

Application filed August 8, 1921. Serial Nb. $0,573.

Be it known thatI, Osoa'iz A. ViniinALA', a citizen ofthe United States, and a resident of the township of Rome, in the county of i 5 VVhatcom and State of Washington, have invented a new and useful Lubricating Systerm for Logging Blocks, of which the following is a specification.

My invention relates to improvements in lubricating systems for logging blocks, and

the object ofmy invention is to provide a simple system of lubrica'tion for] logging blocks that will supply ample lubricant at all times of use notwithstanding the high speed and heavy pressures under which these blocks must at times operate in modern skyline logging.

I attain this object with the mechanism illustrated in the accompanying sheet of drawings in which Figure 1 is a front elevation of a logging block to which my lubricating system is applied, and Fig. 2 is a side elevation of Fig. 1.

Similar characters refer to similar parts throughout. Certain parts are broken away in order to show other parts hidden thereby. In both of Figs. 1 and 2 parts are shown in section on a medial, vertical plane.

' More particularly: 3, 3 are the blocks plates. i

4 is a hollow pin for a sheave axle.

5, 5 are screw caps in each end of hollow pin 4 which is tapped to permit said plugs to be screwed well within the same.

6, 6 are holes through the walls of pin 4 7 is a bushing fixed in sheave mounted on pin 4 for revolution.

8, 8 are four holes through bushing 7 each inclined as shown in Fig. 1.

9, Qare tour grease tubes, each engaged in a radial, tapped hole through the walls of hub 15 registering with one of holes 8 through the walls of bushing 7. 7

10 is a screw plug fitted to engage in the tapped outer end of each of grease tubes 9.

11 is a disc piston in each of grease tubes 9 having a central hole through which rod 13 projects.

12 is aspring reacting between cap 10' and disc .11 to cause said disc to bear on the grease in said cup or tube.

13 is a rod fastened centrally in cap 10 and on it slides disc 11.

14 is arable sheave havin hub 15niountedrevolatien on pin a hub 15 and i 16 is apin through registering holes in the pperends of plates 3. Pin 16 is'retained in ace by cotter plus in holes nearits ends- 17, 17 are clevis bars mountedon pin 16.

. 17 is a finger'hook mounted for rotation on riveted pin 18 through the upper 'end of clevis bars 17. I

19 is a keeper ring having a hub mounted for rotation on a riveted pin 20 through clevis bars 17 and adapted to engage the end of finger hook 17 1 21 is a cotter pin in a hole near the end of finger hook 17 a to retain keeper ring19 engaged with said hook. g

In operation: Grease tubes 9 and hollow axlepin 4 are all kept supplied with grease.

In tubes 9 this grease is forced through holes 8 by pressure from springs 12. In the hollow'pin the grease is forced: through'holes 6 by pressure from screw plugs 5. The flow of grease through holes 6 and 8 is further aided by the oblique direction of the same.

When sheave l4 revolves in a clockwise direction suction is caused at the outlets of holes 6 which promotes the flow of grease therefrom. Similarly, when said sheave revolves in a counter-clockwise direction suction is caused at the outlet ends ot holes 8 i which promotes flow of grease therefrom. Because of this force of suction, which is augmented by the oblique direction of said grease holes, andthe entry of grease on the 6 bearing surfaces from both the interior and exterior of sald surtaces, harder grease can fillingless frequently; Iaving thus disclosed my inventioin'what I claim isnew and desire" to secure by Letters Patent is,-

1. In the lubricating system of a pulley block in combination, a sheave axle having a lubricant receptacle within and a" conduit therein.

2. In combination, the hollow axle of; a pulley block having conduits through its walls and. a threads; interior, said conduits be used with my system of lubrication than is otherwise safe, and the grease cupsrequire Q ee-93% inclined to the bearing surface of sdlduxlc a threaded plug engaged in each end of said axle interior, a sheave mountedfor revolution on said axle havin tapped holes in its hub and conduits le'acfin'g obliquely from said holes to the bearing surface of saicl sheave, and a lubrlcant receptacle engaged;

in each ofsaicl holes in said hub.

3. In a lubrlcatlng system 1n colnblnatlon,

bearing Surface at an angletherewith, a wheel mounted for revolution on saicl axle, and means to'cause lubricant to How from Within said wheel to said journal-bearing u. direcsucl lusurface at an angle therewith and in. tlon intersectlng that of the flow of bricant from Within said axle.

I 4. In a lubricating system in combination,

a 'ournal bezu'in i, means uclanted tocause 20 OSCAR A. WIRKKAIM, 

